diff --git a/qemu/exec.c b/qemu/exec.c
index d8cc07c6..7b071766 100644
--- a/qemu/exec.c
+++ b/qemu/exec.c
@@ -2026,7 +2026,7 @@ static MemTxResult address_space_write_continue(AddressSpace *as, hwaddr addr,
                 break;
             case 4:
                 /* 32 bit write access */
-                val = ldl_p(buf);
+                val = (uint32_t)ldl_p(buf);
                 result |= memory_region_dispatch_write(mr, addr1, val, 4,
                                                        attrs);
                 break;